A new method was proposed for the evaluation of the efficiency of microwave heating asphalt mixtures and the influences of density and particle sizes of reclaimed asphalt pavement (RAP). Temperature distributions of asphalt mixtures with density of 1.35 and 2.02 t/m³ and particle size ranges of 3–6, 6–9.5, and 9.5–13.2 mm along the direction of microwave propagation were experimentally evaluated and the results obtained for the efficiency of microwave heating RAP with different densities and particle sizes were compared based on the proposed method. Also, increase of the particle size of RAP with basalt aggregates higher ability of microwave absorption.

提出了一种评价微波加热沥青混合料效率和再生沥青路面（RAP）密度和粒径影响的新方法。对密度为 1.35 和 2.02 t/m ³且粒径范围为 3–6、6–9.5 和 9.5–13.2 mm的沥青混合料沿微波传播方向的温度分布进行了实验评估，并获得了效率的结果基于所提出的方法，比较了不同密度和粒径的微波加热RAP。此外，随着玄武岩聚集体的 RAP 粒径的增加，微波吸收能力更高。